Home / 28,200.15-38,919.69-16,869.60

Finding the Fourth Proportional to 28,200.15, 38,919.69 and 16,869.60

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Solution

The fourth proportional to 28,200.15, 38,919.69 and 16,869.60 is: 23,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.15 : 38,919.69 = 16,869.60 : x
  2. Step 2: Convert to fraction form
    28,200.15/38,919.69 = 16,869.60/x
  3. Step 3: Cross multiply
    28,200.15x = 38,919.69 × 16,869.60
  4. Step 4: Simplify right side
    28,200.15x = 656,559,602.42
  5. Step 5: Solve for x
    x = 656,559,602.42/28,200.15
  6. Step 6: Final answer
    x = 23,282.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.